A smooth type rack module

Abstract

The invention relates to the technical field of rack modules, and proposes a smooth-type rack module, which is designed with transmission compensation and has good overall smoothness during transmission. It is also designed with a wear compensation function, and can form corresponding compensation for transmission wear between matching gears and compound racks to ensure transmission accuracy and improve effective service life. The module comprises a motor, a gear, a module frame and a compound rack, a movable seat is slidably connected to the module frame, the motor is mounted on the movable seat, the gear is mounted on the output shaft of the motor, an installation side cavity and an insertion strip opening are provided on the module frame, the insertion strip opening is connected to the installation side cavity, the compound rack comprises an external fixed rack and an internally embedded rack, both of which are meshed with the gear, the external fixed rack is fixedly connected to the top of the module frame, a nesting groove is provided in the external fixed rack, the internally embedded rack is arranged in the nesting groove, and the internally embedded rack is slidably connected to the insertion strip opening, and a fixing frame is fixedly connected in the installation side cavity.

Description

Technical Field

[0001] The present invention relates to the technical field of rack modules, and in particular to a smooth-type rack module. Background Art

[0002] As we all know, as a transmission device, the working principle of the rack module is to convert rotational motion into linear motion or linear motion into rotational motion through the meshing motion of the gear and the rack. The smooth rack module is a rack module that improves the smoothness of transmission.

[0003] After searching, the commonly used rack modules are mainly composed of aluminum profile body, gears, racks, motors and reducers. Under actual operation, the rotational motion of the gear is converted into the linear motion of the rack, or the linear motion of the rack is converted into the rotational motion of the gear. That is, when the motor forms gear rotation through the reducer, it drives the rack to do linear motion.

[0004] Although the above-mentioned prior art solutions can be used as transmission devices in equipment such as machine tools, since the transmission form between gears and racks is not an endless one-way transmission, but mostly a reciprocating transmission form, how to improve the smoothness of the rack module during the transmission steering process is also one of the key points to determine the transmission quality of the rack module. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a smooth-type rack module, which is designed with transmission compensation and has good overall smoothness during the transmission process. It is also designed with a wear compensation function, which can form corresponding compensation for the transmission wear between the matching gears and the compound rack to ensure transmission accuracy and improve the effective service life.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a smooth-type rack module, including a motor and a gear, and also including a module frame and a composite rack, wherein the module frame is slidably connected with a moving seat, the motor is mounted on the moving seat, the gear is mounted on the output shaft of the motor, and the module frame is provided with an installation side cavity and an insertion strip opening, the insertion strip opening is communicated with the installation side cavity, the composite rack includes an external fixed rack and an internal embedded rack, the external fixed rack and the internal embedded rack are both meshed with the gear, and the external fixed rack is fixedly connected to the module frame. The top of the assembly frame is provided with a nesting groove in the external fixed rack, the internally embedded rack is provided in the nesting groove, and the internally embedded rack is slidably connected in the insertion strip mouth, a fixed connection frame is fixedly connected in the installation side cavity, the fixed connection frame is connected with two elastic springs, the two elastic springs are fixedly connected with a moving frame, the bottom end of the internally embedded rack is fixedly connected with a mounting frame, the moving frame is slidably connected in the mounting frame, a pressure sensor is installed in the mounting frame, the moving frame is provided with a contact push surface matching the pressure sensor, and an electromagnetic assist system is installed in the installation side cavity.

[0007] Furthermore, the electromagnetic assist system includes a fixed frame and a permanent magnet. The fixed frame is fixedly connected in the mounting side cavity. A conductor column is provided in the fixed frame. A spiral wire is wound around the conductor column. The spiral wire and the conductor column cooperate to form an electromagnet. When current is passed through the spiral wire, an electromagnetic field that interacts with the magnetic field of the permanent magnet can be formed. The permanent magnet is fixedly connected to the mounting frame.

[0008] Furthermore, a controller is installed in the installation side cavity, the controller has display and input functions, the controller is electrically connected to the spiral wire, and the controller has the function of adjusting the current size and direction for the spiral wire, and the pressure sensor is electrically connected to the controller.

[0009] Furthermore, a threaded hole is provided on the connecting frame, a threaded rod is threadedly connected in the threaded hole, a connecting plate is rotatably connected to the threaded rod, the two elastic springs are fixedly connected to the connecting plate, and the connecting plate is slidably connected to the connecting frame.

[0010] Furthermore, a guide hole is provided on the fixing frame, a guide rod is slidably connected in the guide hole, and the guide rod is fixedly connected to the connecting plate.

[0011] Furthermore, a plurality of slide seats are fixedly connected to the bottom end of the movable seat, and two slide rails slidably matched with the slide seats are fixedly connected to the top end of the module frame.

[0012] Furthermore, a sealing plate shell is provided at the opening of the mounting side cavity, a notch matching the controller is provided on the sealing plate shell, and a quick-connect electrical plug-in is provided on the controller.

[0013] Furthermore, both left and right ends of the module frame are provided with lifting end plates, and the ends of the two lifting end plates close to each other are installed with anti-collision pads, and the threaded rod is fixedly connected with an auxiliary rotation cap.

[0014] Furthermore, two supporting mounting plates are fixedly connected to the bottom end of the module frame, and a plurality of mounting holes are provided on the two supporting mounting plates.

[0015] Furthermore, the controller is provided with a pressure magnetic field conversion function:

[0016] ,in

[0017] is the pressure value detected by the pressure sensor;

[0018] is the corresponding adjustment value of the electromagnetic field strength;

[0019] is the proportionality coefficient related to the structure, medium and other factors of the spiral conductor;

[0020] is the number of turns of the spiral wire;

[0021] is the proportional coefficient of current control;

[0022] is the sensitivity coefficient of the pressure sensor;

[0023] is the current offset when the pressure sensor output is zero;

[0024] It is the voltage offset of the pressure sensor at zero pressure.

[0025] Compared with the prior art, the present invention provides a smooth-type rack module, which has the following beneficial effects:

[0026] (1) In the present invention, a transmission structure that meshes with the gear is formed by designing a composite rack. The structure can form a two-way meshing transmission against the gear, and further form transmission compensation to ensure transmission accuracy.

[0027] (2) In the present invention, an elastic pushing component matching the composite rack is formed by the cooperation of the fixed frame, the elastic spring, the movable frame and the mounting frame, which can form a corresponding compensation for the transmission wear between the matching gear and the composite rack, forming a wear compensation function to improve the transmission accuracy between the gear and the composite rack.

[0028] (3) In the present invention, the relative position of the embedded rack in the insertion slot is magnetically controlled by the matching electromagnetic power-assist system. During the instantaneous steering process of the gear relative to the composite rack, the electromagnetic power-assist system can be controlled to apply force to the embedded rack relative to the external fixed rack, so as to achieve compensation and buffering of the matching steering impact force, thereby further improving the overall smoothness of the transmission process. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of a partially cutaway three-dimensional structure of the present invention;

[0030] Figure 2 For the present invention Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0031] Figure 3 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0032] Figure 4 It is a schematic diagram of the three-dimensional structure of the elastic spring, the mounting frame and the permanent magnet of the present invention;

[0033] Figure 5 It is a schematic diagram of an exploded three-dimensional structure of the fixed frame, the movable frame and the mounting frame of the present invention;

[0034] Figure 6 It is a schematic diagram of the three-dimensional structure of the external fixed rack of the present invention;

[0035] Figure 7 It is a schematic diagram of the three-dimensional structure in which the mounting frame and the pressure sensor of the present invention are relatively installed;

[0036] Figure 8 It is a schematic diagram of the three-dimensional structure of the module frame, slide seat and slide rail of the present invention.

[0037] In the figure: 1. motor; 2. gear; 3. module frame; 4. moving seat; 5. mounting side cavity; 6. insertion strip opening; 7. external fixed rack; 8. internal embedded rack; 9. nesting groove; 10. connecting frame; 11. elastic spring; 12. moving frame; 13. mounting frame; 14. pressure sensor; 15. fixed frame; 16. permanent magnet; 17. conductor column; 18. spiral wire; 19. controller; 20. threaded rod; 21. connecting plate; 22. guide rod; 23. notch; 24. quick-connect electrical plug-in; 25. lifting end plate; 26. slide seat; 27. slide rail; 28. anti-collision pad; 29. ​​auxiliary rotating cap; 30. support mounting plate; 31. mounting hole. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] See also Figure 1-Figure 8 A smooth-type rack module includes a motor 1 and a gear 2, and also includes a module frame 3 and a composite rack. A movable seat 4 is slidably connected to the module frame 3. The motor 1 is installed on the movable seat 4, and the gear 2 is installed on the output shaft of the motor 1. The module frame 3 is provided with an installation side cavity 5 and an insertion strip opening 6. The insertion strip opening 6 is connected to the installation side cavity 5. The composite rack includes an external fixed rack 7 and an internal embedded rack 8. The external fixed rack 7 and the internal embedded rack 8 are both meshed with the gear 2. The external fixed rack 7 is fixedly connected to the top of the module frame 3, and a nesting groove 9 is provided in the external fixed rack 7. The internal embedded rack 8 is arranged in the nesting groove 9, and the internal embedded rack 8 is slidably connected in the insertion strip opening 6. Through the design of the composite rack, a transmission structure that meshes with the gear 2 is formed, and the structure can be relative to the gear 2. A two-way meshing transmission is formed, and transmission compensation is further formed to ensure transmission accuracy. A fixed frame 10 is fixedly connected in the installation side cavity 5. The fixed frame 10 is connected to two elastic springs 11. The two elastic springs 11 are fixedly connected to a moving frame 12. The bottom end of the embedded rack 8 is fixedly connected to a mounting frame 13. The moving frame 12 is slidably connected in the mounting frame 13. Through the cooperation of the fixed frame 10, the elastic spring 11, the moving frame 12 and the mounting frame 13, an elastic pushing component matching the composite rack is formed, which can form corresponding compensation for the transmission wear between the matching gear 2 and the composite rack, forming a wear compensation function to improve the transmission accuracy between the gear 2 and the composite rack. A pressure sensor 14 is installed in the mounting frame 13, and the moving frame 12 is provided with a contact push surface matching the pressure sensor 14.

[0040] It should be further explained that an electromagnetic assist system is installed in the installation side cavity 5, and the electromagnetic assist system includes a fixing frame 15 and a permanent magnet 16. The fixing frame 15 is fixedly connected in the installation side cavity 5. A conductor column 17 is arranged in the fixing frame 15, and a spiral wire 18 is wound around the conductor column 17. The spiral wire 18 cooperates with the conductor column 17 to form an electromagnet. When current is passed through the spiral wire 18, an electromagnetic field that interacts with the magnetic field of the permanent magnet 16 can be formed. The permanent magnet 16 is fixedly connected to the installation frame 13, and through the matching of the electromagnetic assist system, a magnetic control of the relative position of the embedded rack 8 in the insertion slot 6 is formed. In the process of instantaneous steering of the gear 2 relative to the composite rack, the electromagnetic power-assist system can be controlled to realize the force of the embedded rack 8 relative to the external fixed rack 7, so as to achieve the compensation and buffering of the matching steering impact force, and further improve the overall smoothness of the transmission process. A controller 19 is installed in the installation side cavity 5. The controller 19 has display and input functions. The controller 19 is electrically connected to the spiral wire 18, and the controller 19 has the function of adjusting the current size and direction for the spiral wire 18. The pressure sensor 14 is electrically connected to the controller 19, and the controller 19 is provided with a pressure magnetic field conversion function:

[0041] ,in

[0042] is the pressure value detected by the pressure sensor 14;

[0043] is the corresponding adjustment value of the electromagnetic field strength;

[0044] is a proportionality coefficient related to the structure, medium and other factors of the spiral conductor 18;

[0045] is the number of turns of the spiral conductor 18;

[0046] is the proportional coefficient of current control;

[0047] is the sensitivity coefficient of the pressure sensor 14;

[0048] is the current offset when the output of the pressure sensor 14 is zero;

[0049] is the voltage offset of the pressure sensor 14 at zero pressure;

[0050] In practical applications, it is necessary to experimentally measure the electromagnetic field strength data under different pressures, and then use methods such as data fitting to determine the various coefficients in the above model in order to obtain a more accurate mathematical model.

[0051] It should be further explained that a threaded hole is provided on the connecting frame 10, a threaded rod 20 is threadedly connected in the threaded hole, a connecting plate 21 is rotatably connected to the threaded rod 20, two elastic springs 11 are fixedly connected to the connecting plate 21, and the connecting plate 21 is slidably connected to the connecting frame 10, so as to facilitate the adjustment of the effective compression amount of the elastic spring 11 between the connecting frame 10 and the mounting frame 13, so that there is sufficient relative movement tendency between the external fixed rack 7 and the internal embedded rack 8, a guide hole is provided on the connecting frame 10, a guide rod 22 is slidably connected in the guide hole, and the guide rod 22 is fixedly connected to the connecting plate 21, so as to guide the moving direction when the relative position between the connecting plate 21 and the connecting frame 10 is adjusted, a plurality of slide seats 26 are fixedly connected to the bottom end of the moving seat 4, and two slide seats 26 are fixedly connected to the top end of the module frame 3 A slide rail 27 is provided, and a sealing plate shell is provided at the opening of the installation side cavity 5. The sealing plate shell is provided with a notch 23 matching the controller 19. The controller 19 is provided with a quick-connect electrical plug-in 24, and the opening of the supporting installation side cavity 5 is closed to realize the protection of the corresponding components in the installation side cavity 5. Lifting end plates 25 are provided at both ends of the module frame 3, and anti-collision pads 28 are installed at the ends close to each other to realize the limit position of the moving seat 4, reduce the collision risk under the limit displacement state, and improve the operation safety factor. An auxiliary rotating cap 29 is fixedly connected to the threaded rod 20 to facilitate the rotation drive of the threaded rod 20. Two supporting mounting plates 30 are fixedly connected to the bottom end of the module frame 3. Multiple mounting holes 31 are provided on the two supporting mounting plates 30 to facilitate the matching installation of the module frame 3 relative to the external equipment.

[0052] The motor 1 in this embodiment is a conventional device purchased on the market and known to those skilled in the art. In the present invention, we only use it without improving its structure and function. For those skilled in the art, its setting method, installation method and electrical connection method only need to be debugged and operated according to the requirements of its instruction manual, and will not be described in detail here.

[0053] In summary, the working principle of the smooth-type rack module is as follows: when in use, first install the smooth-type rack module at the place of use, and install the equipment that needs to be moved outside on the mobile seat 4, install the matching control power supply for the motor 1, and insert the control power supply for the quick-connect electrical plug 24, start the controller 19, rotate the threaded rod 20, so that the elastic spring 11 between the fixed frame 10 and the mounting frame 13 is in a sufficiently compressed state, and the compression state is quantified by the reading of the pressure sensor 14 and displayed by the controller 19. According to the reading of the displayed pressure sensor 14, the compression amount of the elastic spring 11 is adjusted in combination with the transmission conditions of the gear 2 and the composite rack, so that the reading of the pressure sensor 14 is within a suitable range, and the selection of the range requires The selection is made according to the specific situation of the moving device on the moving seat 4. The lower limit value of the appropriate range of the pressure sensor 14 should ensure that there is sufficient relative transmission force between the gear 2 and the compound rack. After the adjustment is completed, the motor 1 works to realize the rotation drive of the gear 2. Since the elastic spring 11 is in a compressed state, it has a tendency of elastic recovery. Under the elastic recovery trend of the elastic spring 11, the embedded rack 8 will form a tendency of relative displacement relative to the external fixed rack 7, so that the external fixed rack 7 and the embedded rack 8 form a clamping effect relative to the gear 2, reduce the transmission gap, improve the transmission smoothness and transmission accuracy, when the moving device needs the motor 1 to work to control the gear 2 relative to the compound rack due to instantaneous startup and movement direction conversion. When the relative force formed by the strip increases instantaneously or the direction of the force changes, when the pressure value borne by the pressure sensor 14 changes due to the change in force, the pressure-magnetic field conversion function in the controller 19 forms a calculation of the corresponding magnetic field demand under the adaptive pressure value, and then generates an electromagnetic field by sending current into the spiral wire 18. Under the interaction between the electromagnetic field and the permanent magnetic field, the force compensation of the mounting frame 13 is achieved, so that there is sufficient impact force compensation force between the embedded rack 8 and the external fixed rack 7, and the compensation force will form a follow-up change according to the change of the detection value of the pressure sensor 14 to cope with the changes in the actual working conditions and the corresponding working conditions. Since the gear 2, the external fixed rack 7 and the embedded rack 8 are driven by the three During the process, there is wear and tear on the parts in contact with each other, so as the wear and tear forms, the elastic spring 11 will automatically compensate for the wear and tear. However, as the wear accumulates, once the value detected by the pressure sensor 14 exceeds the set range under normal conditions, it means that the compensation effect of the elastic spring 11 fails. Thereafter, it is necessary to further adjust the compression amount of the elastic spring 11 by rotating the threaded rod 20 to make the external fixed rack 7 and the internal embedded rack 8 have sufficient movement tendency again, so as to achieve a reasonable clamping effect relative to the gear 2. The clamping effect of the external fixed rack 7 and the internal embedded rack 8 relative to the gear 2 should not be too large to avoid the external fixed rack 7 and the internal embedded rack 8 being stuck relative to the gear 2, causing excessive wear.Each coefficient in the pressure magnetic field conversion function needs to be measured during the first rotation of the threaded rod 20, and in order to improve the reliability of each coefficient, the corresponding coefficient can be determined by taking the average value of multiple measurements, and when the threaded rod 20 needs to be rotated and adjusted after wear, the validity of each coefficient needs to be verified again after the threaded rod 20 is rotated and adjusted. If necessary, each coefficient is corrected to ensure the reliability of the smooth rack module during movement. In this solution, we have selected an external fixed rack 7 and an internally embedded rack 8 that is relatively adjusted relative to the external fixed rack 7 to achieve compensation for transmission clearance and offset of impact force. Using the same way of thinking, the externally fixed rack 7 can also form a magnetic adjustment drive method similar to the internally embedded rack 8 to optimize transmission accuracy and smoothness. The same reason is that there are two working modes of the rack module, one is to convert rotational motion into linear motion, and the other is to convert linear motion into rotational motion. Therefore, according to different working modes, the principle of the composite gear 2 is used to form the corresponding composite design of the gear 2, which should also be included in the scope of the present invention. ,

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A smooth-sliding rack module, comprising a motor (1) and a gear (2), characterized in that: It also includes a module frame (3) and a composite rack, wherein the module frame (3) is slidably connected to a movable seat (4), the motor (1) is mounted on the movable seat (4), the gear (2) is mounted on the output shaft of the motor (1), the module frame (3) is provided with a mounting side cavity (5) and an insertion strip opening (6), the insertion strip opening (6) is communicated with the mounting side cavity (5), the composite rack includes an external fixed rack (7) and an internal embedded rack (8), the external fixed rack The external fixed rack (7) and the embedded rack (8) are both meshed with the gear (2), the external fixed rack (7) is fixedly connected to the top of the module frame (3), and a nesting groove (9) is provided in the external fixed rack (7), the embedded rack (8) is provided in the nesting groove (9), and the embedded rack (8) is slidably connected in the insertion strip opening (6), and a fixed connection frame (10) is fixedly connected in the installation side cavity (5), and the fixed connection frame (10) is connected to two elastic springs (11), two The elastic spring (11) is fixedly connected to a movable frame (12), and the bottom end of the embedded rack (8) is fixedly connected to a mounting frame (13). The movable frame (12) is slidably connected to the mounting frame (13). A pressure sensor (14) is installed in the mounting frame (13). The movable frame (12) is provided with a contact push surface matching the pressure sensor (14). An electromagnetic assist system is installed in the mounting side cavity (5). The electromagnetic assist system comprises a fixed frame (15) and a permanent magnet (16). The fixed frame (15) is fixedly connected to the mounting side cavity (5). A conductor column (17) is provided in the fixed frame (15). A spiral wire (18) is wound around the conductor column (17). The spiral wire (18) cooperates with the conductor column (17) to form an electromagnet. When a current is passed through the spiral wire (18), an electromagnetic field that interacts with the magnetic field of the permanent magnet (16) can be formed. The permanent magnet (16) is fixedly connected to the mounting frame (13).

2. A smooth-sliding rack module according to claim 1, characterized in that: A controller (19) is installed in the installation side cavity (5), the controller (19) has display and input functions, the controller (19) is electrically connected to the spiral wire (18), and the controller (19) has the function of adjusting the magnitude and direction of the current for the spiral wire (18), and the pressure sensor (14) is electrically connected to the controller (19).

3. A smooth-sliding rack module according to claim 2, characterized in that: The connecting frame (10) is provided with a threaded hole, a threaded rod (20) is threadedly connected to the threaded hole, a connecting plate (21) is rotatably connected to the threaded rod (20), the two elastic springs (11) are fixedly connected to the connecting plate (21), and the connecting plate (21) is slidably connected to the connecting frame (10).

4. A smooth-sliding rack module according to claim 3, characterized in that: A guide hole is provided on the fixing frame (10), a guide rod (22) is slidably connected in the guide hole, and the guide rod (22) is fixedly connected to the connecting plate (21).

5. A smooth-sliding rack module according to claim 4, characterized in that: The bottom end of the movable seat (4) is fixedly connected to a plurality of slide seats (26), and the top end of the module frame (3) is fixedly connected to two slide rails (27) that are slidably matched with the slide seats (26).

6. A smooth-sliding rack module according to claim 5, characterized in that: A sealing plate shell is provided at the opening of the installation side cavity (5), a notch (23) matching the controller (19) is provided on the sealing plate shell, and a quick-connect electrical plug-in (24) is provided on the controller (19).

7. A smooth-sliding rack module according to claim 6, characterized in that: Both left and right ends of the module frame (3) are provided with lifting end plates (25), and the ends of the two lifting end plates (25) close to each other are both installed with anti-collision pads (28), and the threaded rod (20) is fixedly connected with an auxiliary rotation cap (29).

8. A smooth-sliding rack module according to claim 7, characterized in that: Two supporting mounting plates (30) are fixedly connected to the bottom end of the module frame (3), and a plurality of mounting holes (31) are provided on the two supporting mounting plates (30).

9. A smooth-sliding rack module according to claim 8, characterized in that: The controller (19) is provided with a pressure-magnetic field conversion function: ,in is the pressure value detected by the pressure sensor (14); is the corresponding adjustment value of the electromagnetic field strength; is a proportionality coefficient related to the structure, medium and other factors of the spiral conductor (18); is the number of turns of the spiral conductor (18); is the proportional coefficient of current control; is the sensitivity coefficient of the pressure sensor (14); is the current offset when the output of the pressure sensor (14) is zero; is the voltage offset of the pressure sensor (14) at zero pressure.

Images